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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: libsolv security update
Advisory ID:       RHSA-2021:4060-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:4060
Issue date:        2021-11-02
CVE Names:         CVE-2021-33928 CVE-2021-33929 CVE-2021-33930 
                   CVE-2021-33938 
=====================================================================

1. Summary:

An update for libsolv is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The libsolv packages provide a library for resolving package dependencies
using a satisfiability algorithm.

Security Fix(es):

* libsolv: heap-based buffer overflow in pool_installable() in src/repo.h
(CVE-2021-33928)

* libsolv: heap-based buffer overflow in pool_disabled_solvable() in
src/repo.h (CVE-2021-33929)

* libsolv: heap-based buffer overflow in pool_installable_whatprovides() in
src/repo.h (CVE-2021-33930)

* libsolv: heap-based buffer overflow in prune_to_recommended() in
src/policy.c (CVE-2021-33938)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

2000699 - CVE-2021-33928 libsolv: heap-based buffer overflow in pool_installable() in src/repo.h
2000703 - CVE-2021-33929 libsolv: heap-based buffer overflow in pool_disabled_solvable() in src/repo.h
2000705 - CVE-2021-33930 libsolv: heap-based buffer overflow in pool_installable_whatprovides() in src/repo.h
2000707 - CVE-2021-33938 libsolv: heap-based buffer overflow in prune_to_recommended() in src/policy.c

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
libsolv-0.7.16-3.el8_4.src.rpm

aarch64:
libsolv-0.7.16-3.el8_4.aarch64.rpm
libsolv-debuginfo-0.7.16-3.el8_4.aarch64.rpm
libsolv-debugsource-0.7.16-3.el8_4.aarch64.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.aarch64.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.aarch64.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.aarch64.rpm
python3-solv-0.7.16-3.el8_4.aarch64.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.aarch64.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.aarch64.rpm

ppc64le:
libsolv-0.7.16-3.el8_4.ppc64le.rpm
libsolv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
libsolv-debugsource-0.7.16-3.el8_4.ppc64le.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
python3-solv-0.7.16-3.el8_4.ppc64le.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm

s390x:
libsolv-0.7.16-3.el8_4.s390x.rpm
libsolv-debuginfo-0.7.16-3.el8_4.s390x.rpm
libsolv-debugsource-0.7.16-3.el8_4.s390x.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.s390x.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.s390x.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.s390x.rpm
python3-solv-0.7.16-3.el8_4.s390x.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.s390x.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.s390x.rpm

x86_64:
libsolv-0.7.16-3.el8_4.i686.rpm
libsolv-0.7.16-3.el8_4.x86_64.rpm
libsolv-debuginfo-0.7.16-3.el8_4.i686.rpm
libsolv-debuginfo-0.7.16-3.el8_4.x86_64.rpm
libsolv-debugsource-0.7.16-3.el8_4.i686.rpm
libsolv-debugsource-0.7.16-3.el8_4.x86_64.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.i686.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.x86_64.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.i686.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.x86_64.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.i686.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.x86_64.rpm
python3-solv-0.7.16-3.el8_4.x86_64.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.i686.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.x86_64.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.i686.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.x86_64.rpm

Red Hat CodeReady Linux Builder (v. 8):

aarch64:
libsolv-debuginfo-0.7.16-3.el8_4.aarch64.rpm
libsolv-debugsource-0.7.16-3.el8_4.aarch64.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.aarch64.rpm
libsolv-devel-0.7.16-3.el8_4.aarch64.rpm
libsolv-tools-0.7.16-3.el8_4.aarch64.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.aarch64.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.aarch64.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.aarch64.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.aarch64.rpm

ppc64le:
libsolv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
libsolv-debugsource-0.7.16-3.el8_4.ppc64le.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
libsolv-devel-0.7.16-3.el8_4.ppc64le.rpm
libsolv-tools-0.7.16-3.el8_4.ppc64le.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.ppc64le.rpm

s390x:
libsolv-debuginfo-0.7.16-3.el8_4.s390x.rpm
libsolv-debugsource-0.7.16-3.el8_4.s390x.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.s390x.rpm
libsolv-devel-0.7.16-3.el8_4.s390x.rpm
libsolv-tools-0.7.16-3.el8_4.s390x.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.s390x.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.s390x.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.s390x.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.s390x.rpm

x86_64:
libsolv-debuginfo-0.7.16-3.el8_4.i686.rpm
libsolv-debuginfo-0.7.16-3.el8_4.x86_64.rpm
libsolv-debugsource-0.7.16-3.el8_4.i686.rpm
libsolv-debugsource-0.7.16-3.el8_4.x86_64.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.i686.rpm
libsolv-demo-debuginfo-0.7.16-3.el8_4.x86_64.rpm
libsolv-devel-0.7.16-3.el8_4.i686.rpm
libsolv-devel-0.7.16-3.el8_4.x86_64.rpm
libsolv-tools-0.7.16-3.el8_4.x86_64.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.i686.rpm
libsolv-tools-debuginfo-0.7.16-3.el8_4.x86_64.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.i686.rpm
perl-solv-debuginfo-0.7.16-3.el8_4.x86_64.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.i686.rpm
python3-solv-debuginfo-0.7.16-3.el8_4.x86_64.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.i686.rpm
ruby-solv-debuginfo-0.7.16-3.el8_4.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-33928
https://access.redhat.com/security/cve/CVE-2021-33929
https://access.redhat.com/security/cve/CVE-2021-33930
https://access.redhat.com/security/cve/CVE-2021-33938
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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